package http;/*

 */

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.util.CharsetUtil;

import java.net.URI;

/**
 * @ClassName HttpServiceHandler
 * @Author Final
 * @Project DataStructures
 *
 * SimpleChannelInboundHandler是ChannelInboundHandler子类
 * HttpObject 客户端和服务端相互通讯的数据被封装成HttpObject
 */
public class HttpServerHandler  extends SimpleChannelInboundHandler<HttpObject> {
    /**
     * 读取客户端数据
     * @param ctx
     * @param msg
     * @throws Exception
     */


    @Override
    protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {

        if (msg instanceof HttpRequest){
            System.out.println("msg类型是："+msg.getClass());
            System.out.println("客户端地址："+ctx.channel().remoteAddress());


            HttpRequest httpMsg = (HttpRequest) msg;

            //获取uri，过滤指定的资源
            URI uri = new URI(httpMsg.uri());

            if ("/favicon.ico".equals(uri.getPath())){
                System.out.println("请求了favicon.ico,不做响应");
                return;
            }
            //回复信息给浏览器

            ByteBuf buf = Unpooled.copiedBuffer("hello，我是服务器", CharsetUtil.UTF_8);

            //构造一个http的响应 即httResponse
            DefaultFullHttpResponse httpResponse = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);

            httpResponse.headers().set(HttpHeaderNames.CONTENT_TYPE,"test/plain");
            httpResponse.headers().set(HttpHeaderNames.CONTENT_LENGTH,buf.readableBytes());

            ctx.writeAndFlush(httpResponse);
        }
    }
}
